This men\'s running base layer by the brand Runderwear is made from 92% polyamide and 8% elastane and is showcased in black. Also the black sports t-shirt is designed in a plain pattern, It is recommended to wash at 40 degrees, do not tumble dry,do not iron and do not bleach to keep this sports t-shirt in good condition. All the sports t-shirts come complete in runderwear packaging. The Runderwear Running Base Layer - Black guarantees a chafe-free running experience thanks to its carefully thought out material choices and design. It provides dynamic heat control, which keeps you warm while running in cold weather and cool when running in hot weather whilst also ensuring moisture is wicked away, preventing odours. This piece is essential for your running attire and will not disappoint in comfort or practicality. KEY FEATURES 92% Polyamide and 8% Elastane Chafe-free, Dynamic Heat Control, Flexible Fit, Seamless, Moisture Wicking Long Sleeved Wash at 40 degrees, do not tumble dry,do not iron and do not bleach Complete in Runderwear packaging.